The iCloud Activation Lock is a security feature designed by Apple to prevent unauthorized access to your iPhone if it's lost ...

Enter a label for the password, such as "Gmail ... At any point, you can change your iCloud account name, set a mobile signature, tweak sync frequency, and change other iCloud settings in ...

To change your iCloud account on an iPad ... your device may prompt you to enter your Apple ID password to first turn this function off. 4. A pop-up will then ask, "Keep a copy of your data ...